F&L's SP-1 is specially designed for today's high performance engines. When it comes to performance and throttle response, SP-1 delivers. SP-1 protects againsts harmful pre-detonation in engines with compression ratios of up to 14:1 and provides cooler running exhaust temperatures. It is legal for competition in all major sanctioning bodies. Recommended applications include off-road, oval track, road, endurance racing, PWC, offshore powerboats, drag, motorcycle, road racing and motorcross.